{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": "unmaintained"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "proc-macro-error2",
        "purl": "pkg:cargo/proc-macro-error2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The author of `proc-macro-error2` has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.\n\n`proc-macro-error2` was originally created as a maintained fork of [`proc-macro-error`](https://crates.io/crates/proc-macro-error) (see [RUSTSEC-2024-0370](https://rustsec.org/advisories/RUSTSEC-2024-0370)). Both the original crate and this fork are now unmaintained.\n\n## Possible Alternative(s)\n\n- [manyhow](https://crates.io/crates/manyhow)\n- [proc-macro2-diagnostics](https://github.com/SergioBenitez/proc-macro2-diagnostics)",
  "id": "RUSTSEC-2026-0173",
  "modified": "2026-06-07T20:48:51Z",
  "published": "2026-06-07T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/proc-macro-error2"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0173.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/GnomedDev/proc-macro-error-2/issues/17"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "proc-macro-error2 is unmaintained"
}